MATHEMATICS ANXIETY AND COGNITIVE PERFORMANCE IN ADOLESCENT STUDENTS

Several studies highlight that many students feel negative feelings about mathematical learning and that the mathematics anxiety seems to play a central role in mathematical performance. More specifically students with higher level of maths anxiety are less efficient in mathematical tasks. The aim of this study was to investigate the relationship between specific mathematics anxiety as assessed by AMAS, trait and state anxiety as assessed by STAI-Y, and mathematical skills assessed through the ABCA tests in a sample of 83 adolescent students (78.3% males) without diagnosis of dyscalculia and cognitive disorder attending their first year of secondary school. Results showed that 38% of the students referred high level of maths anxiety. Independent T-test revealed that female students referred a higher level of maths anxiety as well as of trait and state anxiety than male ones, while there were no differences in the mathematics performance. The simultaneous multivariate linear regression analysis showed that maths anxiety was influenced by trait anxiety and in its turn has an impact on the high level mathematics performances (i.e. arithmetic facts). Understanding the relationships between maths anxiety and maths learning and performance may have relevant implications in clinical, educational and didactic practice

EVALUATION OF THE QUALITY OF REHABILITATION TREATMENT IN NEURODEVELOPMENTAL DISORDER

Complex disability is very difficult to manage. It usually subtends very serious clinical pictures, because it affect several body systems, or because it is associated with intellectual disability and behavioral disorders. Often affected patients are unable to communicate their basic needs. All these factors combine to make the management of these patients very complex, and those who care for them realize how important it is to find a way to detect their state and to identify their potential capabilities. Developing appropriate rehabilitation programs for these patients requires additional effort and an assessment capacity that is as objective as possible. Few scales cited in the literature are capable of evaluating these aspects in patients with complex disabilities, among them the Barthel Index (Mahoney & Barthel 1965) and the Vineland Adaptive Behavior scale II (Sparrow et al. 2005). The majority of these scales often tend to depict the data regarding the disease to a degree of severity that precludes adequate individual rehabilitation program development. There is a dire need for a more appropriate instrument, an observational grid that is capable of identifying the potential of this patient population and evaluate the effectiveness of rehabilitation interventions provided. The aim of the study is to evaluate the efficacy of rehabilitation interventions in a group of patients with IQ <32 (determined by the Vineland II scale) using an evaluation tool created ad hoc called D-Rubrics, designed with the intent to identify “microdifferences” between baseline (T0) and post-rehabilitation (T1). The goal is part of a more long term-term objective which involves developing an effective assessment tool for patients with complex disabilities. Such an assessment tool should be practical, easy to administer and useful in both clinical and research settings

Measles outbreaks in the Emilia-Romagna Region, Italy, during 2016

Background and aim. Despite the availability of a vaccine,measles continues to be endemic in Italy, where an increase of cases was reported during 2016. This study describes the measles outbreaks in Emilia-Romagna Region (ERR), one of the Italian regions mostly affected. Materials and Methods. A total of 101 suspected cases were reported in ERR during 2016. Laboratory diagnosis by serological and/or molecular methods was performed on 142 specimens (78 urine, 19 oral fluid and 45 sera) related to 97 suspected cases. For positive cases, measles virus (MV) strains involved were identified. Results. Among 101 suspected cases, 72 (71.3%) were confirmed. Vaccination status was known for 61 (84.7%) cases, of which 56 (91.8%) were unvaccinated. The highest incidence was found in the age group 15-39 years. In addition, for the 34.7% (25/72) of confirmed cases, the transmission occurred in nosocomial settings, where healthcare workers were involved (60% of cases). Roma/Sinti population were also involved in 12.5% (9/72)or confirmed cases. Both groups are considered hard-to-reach for immunization. The phylogenetic analysis showed circulation of MV strains belonging to genotype B3 and D8 in 45 (80.4%) and 11 cases (19.6%), respectively. In 94.7% of cases, the measles endemic transmission was demonstrated. Conclusions. This data obtained through active surveillance showed the endemic transmission of MV within a population with immunity gaps including healthcare workers (20.8% of confirmed cases), among which the spread of two endemic MV strains was observed

N omega-nitro-L-arginine methyl ester prevents apoptosis induced in the lateral geniculate nucleus by light deprivation in adult rabbit

Exposure of adult rabbits to darkness for 48 h produces bilateral DNA fragmentation in the lateral geniculate nucleus as revealed in brain sections by terminal deoxynucleotidyl transferase (TdT)-mediated dUTP-biotin nick end labelling (TUNEL) technique, suggesting an apoptotic type of cell death. In agreement with the latter deduction, light microscopy assessment of the morphological characteristics showed marginalization and condensation of nuclear chromatin, typical features of apoptosis. These effects were abolished by systemic administration of N omega-nitro-L-arginine methyl ester, an inhibitor of nitric oxide (NO) synthesis, whereas the D isomer was ineffective. In conclusion, the present data demonstrate that light deprivation for 48 h produces apoptosis in the lateral geniculate nucleus of rabbit and suggest that NO might be involved

Fetal Brain Damage in Human Fetuses with Congenital Cytomegalovirus Infection: Histological Features and Viral Tropism

Human cytomegalovirus (HCMV) causes congenital neurological lifelong disabilities. To date, the neuropathogenesis of brain injury related to congenital HCMV (cCMV) infection is poorly understood. This study evaluates the characteristics and pathogenetic mechanisms of encephalic damage in cCMV infection. Ten HCMV-infected human fetuses at 21 weeks of gestation were examined. Specifically, tissues from different brain areas were analyzed by: (i) immunohistochemistry (IHC) to detect HCMV-infected cell distribution, (ii) hematoxylin-eosin staining to evaluate histological damage and (iii) real-time PCR to quantify tissue viral load (HCMV-DNA). The differentiation stage of HCMV-infected neural/neuronal cells was assessed by double IHC to detect simultaneously HCMV-antigens and neural/neuronal markers: nestin (a marker of neural stem/progenitor cells), doublecortin (DCX, marker of cells committed to the neuronal lineage) and neuronal nuclei (NeuN, identifying mature neurons). HCMV-positive cells and viral DNA were found in the brain of 8/10 (80%) fetuses. For these cases, brain damage was classified as mild (n = 4, 50%), moderate (n = 3, 37.5%) and severe (n = 1, 12.5%) based on presence and frequency of pathological findings (necrosis, microglial nodules, microglial activation, astrocytosis, and vascular changes). The highest median HCMV-DNA level was found in the hippocampus (212 copies/5 ng of human DNA [hDNA], range: 10-7,505) as well as the highest mean HCMV-infected cell value (2.9 cells, range: 0-23), followed by that detected in subventricular zone (1.7 cells, range: 0-19). These findings suggested a preferential viral tropism for both neural stem/progenitor cells and neuronal committed cells, residing in these regions, confirmed by the expression of DCX and nestin in 94% and 63.3% of HCMV-positive cells, respectively. NeuN was not found among HCMV-positive cells and was nearly absent in the brain with severe damage, suggesting HCMV does not infect mature neurons and immature neural/neuronal cells do not differentiate into neurons. This could lead to known structural and functional brain defects from cCMV infection

Evidence that the HIV-1 coat protein gp120 causes neuronal apoptosis in the neocortex of rat via a mechanism involving CXCR4 chemokine receptor

The HIV-1 coat protein, gp120 (100 ng given intracerebroventricularly (i.c.v.) daily for seven consecutive days) causes DNA fragmentation in the brain neocortex of rat. In neocortical cells bearing ultrastructural features typical of apoptosis, electron microscopy revealed specific immunopositivity for neurofilament cytoskeletal proteins, suggesting the neuronal nature of dying cells. Neuronal apoptosis by gp120 implicates CXCR4 chemokine receptors; in fact, in rats receiving a single daily, non-neurotoxic, dose of SDF-1alpha (0.25 pmoles given i.c.v. for 7 days before gp120), the natural ligand of CXCR4 receptor, apoptosis was significantly hindered. The mechanism of SDF-1alpha protection involves inhibition of gp120-enhanced expression of IL-1beta, a cytokine implicated in the mechanisms of apoptosis induced by the viral protein in the neocortex of rat